So, the overview is a mess right now. We're releasing a change soon that'll make it less bad, but we should decide what to do about several issues:
a) Unofficial releases
While we've always shown release groups by default even if they only contained unofficial releases, the problems of that have become more apparent lately. An option would be to only show them by request. Should we do this? If yes, how? Should the options be official/all or official/unofficial? (the latter sounds more useful for people who care about bootlegs, but I'm not sure since I'm not one of them)
Apparently some people want to hide compilations altogether (and require the user asking for them to show them). Others want to keep them away from the list in a "Compilations" section, and yet others want to keep showing them (the official ones at least) in the main list. One of the reasons to keep them in the main list has been providing a chronology - although since the main list is already broken in Album, Single, EP and Other, having a dedicated "chronology" page might be a better option for that.